Definition

What does it mean when your minimum pressure is almost equal to your maximum pressure on AS11.
Device setting 10min 11max


What does shrinking the range between min and maximum theoretically do?

I am where i want to be with less than 5 events. I am playing around with Hi and Lo ranges

Thank you.

The machine, when in auto adjusting mode, decides if/when/how much it needs to increase the pressure based on some complicated factors.

When you limit the max then then it can't increase the pressure ....if it wanted to and it potentially could be in a situation where the airway collapses because the machine couldn't get to where it might have wanted to go.

The machine only goes where it wants to go because it thinks it needs to go there.
Limiting the max does absolutely nothing to change or improve the overall effectiveness of the therapy and it doesn't change the algorithm.

Now you may or may not ever even hit the maximum (even with a tight range like you have now) and the maximum setting becomes a moot point but if the machine could go to 100 and you set the max at 100 and it only goes to 6 cm and never, ever higher....doesn't really matter what the max is set at.

Now sometimes the machine wants/needs to go higher but the going higher part can create problems and if that should happen there is a more urgent need to limit the max because we want to limit the problems that going higher might cause.

So....there is no real advantage to a really tight range in terms of therapy effectiveness and a potential for a major disadvantage but some people like it that way and say they sleep better and they are happy with their results....so who cares. If you never hit your max now...doesn't matter but if you are spending a lot of time up at the max then there is something going on the machine wants to kill. Whether you let it or not is up to you.

ORCARV wrote: ↑

Wed Jul 20, 2022 9:38 am

What does it mean when your minimum pressure is almost equal to your maximum pressure on AS11.
Device setting 10min 11max


What does shrinking the range between min and maximum theoretically do?

I am where i want to be with less than 5 events. I am playing around with Hi and Lo ranges

Thank you.

Having a target of under 5 is a pretty low bar.

Instead of of asking what things mean, and then playing around with dials, why not post your graphs so people with experience can advise.

Right now, setting your Max so close to your minimum is likely a poor therapy option, especially since you're asking "What it means to do so". Playing around with settings is also a poor way of getting to an optimum therapy.

Dog Slobber wrote: ↑

Wed Jul 20, 2022 10:15 am

Instead of of asking what things mean, and then playing around with dials, why not post your graphs so people with experience can advise.

to be fair, he posted a graph in another thread and got zero response. so there's that.

to the op: try again, please, on posting a couple of graphs. maybe now that dog slobber has noticed, he'll be kind enough to chip in with advice.

the reason *I* didn't is that i'm not the best at reading graphs. so please take another wack.

ORCARV wrote: ↑

Wed Jul 20, 2022 9:38 am

What does it mean when your minimum pressure is almost equal to your maximum pressure on AS11.
Device setting 10min 11max

It means the differences in pressures supplied are smaller, and some people sleep better when there are less pressure changes.

ORCARV wrote: ↑

Wed Jul 20, 2022 9:38 am

I am where i want to be with less than 5 events.

Actually the results you posted showed you're at less than 1, and quite consistently.

ORCARV wrote: ↑

Wed Jul 20, 2022 9:38 am

I am playing around with Hi and Lo ranges

Looks to me like you've achieved optimal therapy, and there's no need to play with hi and lo pressures.

I get the impression that the "less than 5" was over the entire night and not the AHI itself.
So not necessarily a low bar standard to meet.
5 events flagged over 7 or 8 hours is well within acceptable numbers...
and the OP did post a follow up to the one that got no replies and I did respond to that one.
So he did get an answer.
His AHI was indeed less than 1.0 and well below at that. I told him he was doing great because he was worried about 1 single event over the entire night. I should do so well.

To OP

Having a close range benefits MAY tend to reduce central apneas in SOME patients (maybe 10% or so), but understand that is clearly the minority - not a mainstream strategy. The disadvantage is that the machine is precluded from going higher IF needed to deal with obstructive or hypopnea events.